4421709 has 20 divisors (see below), whose sum is σ = 6698560. Its totient is φ = 2906280.

The previous prime is 4421693. The next prime is 4421719. The reversal of 4421709 is 9071244.

It is a happy number.

It is not a de Polignac number, because 4421709 - 2⁴ = 4421693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

4421709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6054 + ... + 6744.

It is an arithmetic number, because the mean of its divisors is an integer number (334928).

Almost surely, 2^4421709 is an apocalyptic number.

It is an amenable number.

4421709 is a deficient number, since it is larger than the sum of its proper divisors (2276851).

4421709 is an equidigital number, since it uses as much as digits as its factorization.

4421709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 4421709 is about 2102.7860090841. The cubic root of 4421709 is about 164.1333067427.

The spelling of 4421709 in words is "four million, four hundred twenty-one thousand, seven hundred nine".